Non-contact rotary transmission device

Abstract

The utility model relates to the technical field of transmission, in particular to a non-contact rotary transmission device which comprises a front plate, a synchronizing wheel is rotatably mounted on the front plate, a sealing flange is arranged between the synchronizing wheel and the front plate, the synchronizing wheel is connected with a first cam and a cam shell through a first connecting shaft, and the synchronizing wheel and the cam shell are both rotatably connected with the sealing flange; a chain wheel is rotationally installed in the rear plate, a driving device is externally connected to the chain wheel, the chain wheel is rotationally connected with the rear plate through a bearing, the center of the chain wheel is fixedly connected with the second cam through a second connecting shaft, and connecting grooves used for being connected with connecting blocks in a clamped mode are formed in the opposite faces of the first cam and the second cam. On the premise that the strength and the coaxiality of the transmission structure are guaranteed, protection on parts which are not resistant to corrosion is enhanced, and the service life of the transmission structure is greatly prolonged.

Description

Technical Field

[0001] The present application relates to the field of transmission technology, and in particular to a non-contact rotary transmission device. Background Art

[0002] In traditional rotary transmission structures, transmission parts are only simply isolated and protected, and when the transmission parts are in a highly corrosive environment, their service life is very short, and they need frequent maintenance and replacement, which results in high cost. Therefore, a structure that can increase the service life of the transmission structure is urgently needed. Utility Model Content

[0003] In order to overcome the problems existing in the prior art, the present application provides a non-contact rotary transmission device.

[0004] The present application provides a non-contact rotary transmission device adopts the following technical solution:

[0005] A non-contact rotary transmission device comprises a front plate, on which a synchronous wheel is rotatably mounted, wherein a sealing flange is provided between the synchronous wheel and the front plate, the synchronous wheel is connected to a first cam and a cam housing via a first connecting shaft, and both the synchronous wheel and the cam housing are rotatably connected to the sealing flange; a rear plate, in which a sprocket is rotatably mounted, wherein the sprocket is externally connected to a driving device, the sprocket is rotatably connected to the rear plate via a bearing, wherein the center of the sprocket is fixedly connected to a second cam via a second connecting shaft, and connecting grooves for clamping connecting blocks are provided on opposite surfaces of the first cam and the second cam.

[0006] By adopting the above technical scheme, a sealing flange for sealing is installed between the front plate and the synchronous wheel in the transmission device, the sprocket installed on the rear plate rotates under the drive of the driving device, the sprocket drives the second cam to rotate through the second connecting shaft, and a connecting block is placed in the connecting groove between the second cam and the first cam, thereby synchronously driving the first cam to rotate, and the first cam located in the sealing flange drives the synchronous wheel to rotate through the first connecting shaft, thereby realizing the synchronous wheel on the front plate driven by the sprocket on the rear plate to rotate, the synchronous wheel located in a strong corrosive environment can be made of corrosion-resistant material, and driven to rotate by the driving structure on the rear plate away from the strong corrosive environment, thereby improving the corrosion resistance and service life of the equipment while ensuring the overall strength of the transmission device.

[0007] Preferably, a groove for limiting the sealing flange is opened on the front plate, wherein the sealing flange is surrounded by fixing holes for fixing to the front plate, and a limiting ring with an inner diameter smaller than the sealing flange is provided on the side of the sealing flange away from the front plate.

[0008] Preferably, the inner diameter of the sealing flange is matched to the outer diameter of the cam housing, wherein the inner diameter of the cam housing is matched to the outer diameter of the first cam.

[0009] By adopting the above technical solution, the groove opened on the front plate is used to place the sealing flange and is fixed to the front plate through the fixing holes, thereby improving the connection stability and sealing of the sealing flange and the front plate. The cam housing, the first cam and the synchronous wheel installed inside the sealing flange can be restricted inside the sealing flange by the limiting ring.

[0010] Preferably, the synchronous wheel includes an integrally formed limiting wheel and an output wheel, wherein the outer diameter of the limiting wheel is adapted to the inner diameter of the sealing flange, and the sum of the thickness of the cam housing and the thickness of the limiting wheel is adapted to the inner height of the sealing flange.

[0011] Preferably, the diameter of the output wheel is smaller than the inner diameter of the limiting ring.

[0012] By adopting the above technical solution, the limiting wheel in the synchronous wheel can cooperate with the cam housing and be installed on the front plate under the action of the sealing flange, so as to fix the rotation position of the synchronous wheel. The output wheel located on the outside of the limiting wheel can serve as the output end of the transmission device and rotate in the limiting ring to facilitate its connection with external parts.

[0013] Preferably, the connecting grooves are located on both sides of the center of the first cam and the second cam, and the structures of the connecting grooves are the same.

[0014] By adopting the above technical solution, the connecting groove is located on both sides of the center of the first cam and the second cam, so that the first cam and the second cam can be connected by transmission without affecting the connection between the first connecting shaft and the first cam, thereby ensuring that the power on the sprocket can be output to the synchronous wheel.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The present application adopts a non-contact rotary transmission structure, and provides a sealing mechanism for the rotary transmission structure, including a transmission component and a sealing component, thereby preventing the transmission structure from directly contacting the liquid medicine, avoiding the problem of corrosion and aging, making the transmission structure more sealed and increasing its service life;

[0017] 2. In this application, corrosion-resistant parts are sealed and protected by corrosion-resistant material plates. The shaft part is made of corrosion-resistant material and the shaft extends to the outside of the sealing plate to drive the driven parts to rotate. This ensures the strength and coaxiality of the parts, thereby strengthening the protection of corrosion-resistant parts and greatly improving their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a non-contact rotary transmission device;

[0019] Figure 2 It is a front side schematic diagram of a non-contact type rotary transmission device;

[0020] Figure 3 yes Figure 2 Middle AA section;

[0021] Figure 4 It is an exploded diagram of a non-contact rotary transmission device.

[0022] Explanation of the accompanying drawings: 1. Synchronous wheel; 11. Limiting wheel; 12. Output wheel; 2. Sealing flange; 21. Limiting ring; 3. Cam housing; 4. First cam; 41. Connecting groove; 5. First connecting shaft; 6. Front plate; 7. Second cam; 8. Second connecting shaft; 9. Sprocket; 10. Rear plate. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 This application is described in further detail.

[0024] The embodiment of the present application discloses a non-contact rotary transmission device.

[0025] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A non-contact rotary transmission device comprises a front plate 6, on which a synchronous wheel 1 is rotatably mounted, wherein a sealing flange 2 is provided between the synchronous wheel 1 and the front plate 6, the synchronous wheel 1 is connected to a first cam 4 and a cam housing 3 via a first connecting shaft 5, and both the synchronous wheel 1 and the cam housing 3 are rotatably connected to the sealing flange 2; a rear plate 10, in which a sprocket wheel 9 is rotatably mounted, wherein the sprocket wheel 9 is externally connected to a driving device, and the sprocket wheel 9 is rotatably connected to the rear plate 10 via a bearing, wherein the center of the sprocket wheel 9 is fixedly connected to the second cam 7 via a second connecting shaft 8, and connecting grooves 41 for clamping connecting blocks are provided on opposite surfaces of the first cam 4 and the second cam 7. A sealing flange 2 for sealing is installed between the front plate 6 and the synchronous wheel 1 in the transmission device, and the sprocket 9 installed on the rear plate 10 rotates under the drive of the driving device. The sprocket 9 drives the second cam 7 to rotate through the second connecting shaft 8, and a connecting block is placed in the connecting groove 41 between the second cam 7 and the first cam 4, thereby synchronously driving the first cam 4 to rotate, and the first cam 4 located in the sealing flange 2 drives the synchronous wheel 1 to rotate through the first connecting shaft 5, so that the synchronous wheel 1 on the front plate 6 is driven to rotate by the sprocket 9 on the rear plate 10. The synchronous wheel 1 located in a strong corrosive environment can be made of corrosion-resistant materials and driven to rotate by the driving structure on the rear plate 10 away from the strong corrosive environment, thereby improving the corrosion resistance and service life of the equipment while ensuring the overall strength of the transmission device.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , a groove for limiting the sealing flange 2 is provided on the front plate 6, wherein the sealing flange 2 is provided with fixing holes for fixing with the front plate 6 around it, and a limiting ring 21 with an inner diameter smaller than that of the sealing flange 2 is provided on the side of the sealing flange 2 away from the front plate 6. The inner diameter of the sealing flange 2 is adapted to the outer diameter of the cam housing 3, wherein the inner diameter of the cam housing 3 is adapted to the outer diameter of the first cam 4. The groove provided on the front plate 6 is used to place the sealing flange 2, and is fixed to the front plate 6 through the fixing holes, which can improve the connection stability and sealing performance of the sealing flange 2 and the front plate 6, and the cam housing, the first cam 4 and the synchronous wheel 1 installed inside the sealing flange 2 can be limited inside the sealing flange 2 by the limiting ring 21.

[0027] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The synchronous wheel 1 includes an integrally formed limiting wheel 11 and an output wheel 12, wherein the outer diameter of the limiting wheel 11 is adapted to the inner diameter of the sealing flange 2, and the sum of the thickness of the cam housing 3 and the thickness of the limiting wheel 11 is adapted to the inner height of the sealing flange 2. The diameter of the output wheel 12 is smaller than the inner diameter of the limiting ring 21. The limiting wheel 11 in the synchronous wheel 1 can cooperate with the cam housing 3, and is limitedly installed on the front plate 6 under the action of the sealing flange 2, so as to fix the rotation position of the synchronous wheel 1, and the output wheel 12 located outside the limiting wheel 11 can serve as the output end of the transmission device, and rotates in the limiting ring 21, so as to facilitate its connection with external parts.

[0028] Reference Figure 3 and Figure 4 The connecting groove 41 is located on both sides of the center of the first cam 4 and the second cam 7, and the connecting groove 41 has the same structure. The connecting groove 41 is located on both sides of the center of the first cam 4 and the second cam 7, and can perform transmission connection between the first cam 4 and the second cam 7 without affecting the connection between the first connecting shaft 5 and the first cam 4, so as to ensure that the power on the sprocket wheel 9 can be output to the synchronous wheel 1.

[0029] Working principle: The external power mechanism drives the sprocket 9 to rotate, and the sprocket 9 drives the second connecting shaft 8 at its center to rotate. One end of the second connecting shaft 8 is rotatably connected to the rear plate 10, and the other end drives the second cam 7 to rotate. The second cam 7 is transmission-connected to the first cam 4 through the connecting block. The first cam 4 rotates in the cam housing 3 located in the sealing flange 2, and drives the synchronous wheel 1 to rotate through the first connecting shaft 5, so that the synchronous wheel 1 on the front plate 6 is driven to rotate from the rear plate 10, blocking the transmission structure from directly contacting the liquid medicine.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A non-contact rotary transmission device, characterized in that: include A front plate (6), wherein a synchronous wheel (1) is rotatably mounted on the front plate (6), wherein a sealing flange (2) is provided between the synchronous wheel (1) and the front plate (6), wherein the synchronous wheel (1) is connected to a first cam (4) and a cam housing (3) via a first connecting shaft (5), and the synchronous wheel (1) and the cam housing (3) are both rotatably connected to the sealing flange (2); A rear plate (10), wherein a sprocket (9) is rotatably mounted inside the rear plate (10), wherein the sprocket (9) is externally connected to a driving device, and the sprocket (9) is rotatably connected to the rear plate (10) via a bearing, wherein the center of the sprocket (9) is fixedly connected to the second cam (7) via a second connecting shaft (8), and connecting grooves (41) for clamping a connecting block are provided on the opposite surfaces of the first cam (4) and the second cam (7).

2. A non-contact rotary transmission device according to claim 1, characterized in that: The front plate (6) is provided with a groove for limiting the sealing flange (2), wherein the sealing flange (2) is provided with fixing holes around it for fixing to the front plate (6), and a limiting ring (21) with an inner diameter smaller than that of the sealing flange (2) is provided on the side of the sealing flange (2) away from the front plate (6).

3. A non-contact rotary transmission device according to claim 2, characterized in that: The inner diameter of the sealing flange (2) is matched with the outer diameter of the cam housing (3), wherein the inner diameter of the cam housing (3) is matched with the outer diameter of the first cam (4).

4. A non-contact rotary transmission device according to claim 3, characterized in that: The synchronous wheel (1) comprises an integrally formed limiting wheel (11) and an output wheel (12), wherein the outer diameter of the limiting wheel (11) is adapted to the inner diameter of the sealing flange (2), and the sum of the thickness of the cam housing (3) and the thickness of the limiting wheel (11) is the same as the thickness of the sealing flange (2).

5. A non-contact rotary transmission device according to claim 4, characterized in that: The diameter of the output wheel (12) is smaller than the inner diameter of the limiting ring (21).

6. A non-contact rotary transmission device according to claim 1, characterized in that: The connecting groove (41) is located on both sides of the center of the first cam (4) and the second cam (7), and the connecting grooves (41) have the same structure.

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